Improvement in furnaces for evaporating sugar-juices



UNITED STATES PATENT 0r IIcE.

L. LEFEBVRE, oE NEW o'ELEANs, LoUIsIANA.V

IMPROVEMENT IN FURNACES FOR EVAPORATING SUGAR-JUICES.

Specification forming part of Letters Patent No. 22,126, dated November23, 18:38.

To all whom t may concern:

Bc it known that I, LOUIS LEFEBVRE, of New Orleans, parish of Orleans,State 0f Louisiana, have invented a new and Improved Mode of SettingSugar-Kettles; and I do hereby declare that the following is a full andeXact description thereof, reference being had to the "accompanyingdrawings, and to the lettersof reference marked thereon.

Figure l is a perspective view. A A A A are the kettles; B B B B,emptying-valves to empty the liquid from one kettle to another;

d C, handle of the damper; D D D, gutters to C, the corrugated iiueunder the kettle; D, the

common iluc communicating from one kettle to another; E, the commonbrick-work; F, the inside of the kettle.

Fig. 4 is an elevation. A A A A are the kettles; B, the furnace, C,ash-pan in the ground; D, iiue of the chimney; E, corrugated part of theflue; F, damper to intercept the iire when emptying thekettles; X X X,deposit of ashes, G G G, doors giving access to theplaces X X X in orderto clean them, H, chimney; P P P P, emptying-pipes; S S S S, the piecesfastened with screws to the Vbottom of the kettle. Fig. 4ms. A, thekettle; B, thickness of the kettle; P, the emptying-pipe; S, the sledgeof the pipe fastened to the kettle by the screws C C C.

Fig. 5 is the emptying-valve. A is the shutter, B, the wooden handle ofthe shutter; C, the spout; D, the side of the shutter; E, the part ot'the valve fixed to the emptying-pipe; O, Fig. 6, kettles seenunderneath; A, the piece fixed to the bottom of the kettles by thescrews D D D D 5 B, the emptying-pipe, C, the kettle.

Fig. 7 shows the damper A. B shows the handle; C C, the rails on whichthe damper slides.

Fig. 8 shows the form of an instrument to be used in cleaning thewrinkles or furrows of the kettles.

The object of my invention is to preventthe rapid passage of theproducts vof combustion through the lines surrounding thekettles. Thenature of the invention consists in iiuting o1 corrugating the surfaceof the kettle and conA structing the surface of the brick-work whichconstitutes the opposite face ofthe flue with eorresponding corrugationsor iiutings, so as thereby to produce an undulating passage for theproducts of combustion,which, by preventing the rapid transit thereof,render them more effectual in producing the desired effect upon thecontents of the kettle. These lues conform in sh ape tothe form of thekettle, as shown by C, Fig. 3, and E, Fig. 4, extending from the top ofthe kettle to beneath its bottom, the products of combustion enteringatl the upper portion thereof and passing around the kettle through theundulating passage between the brick-work and the kettle issue bypassageD in Fig. 4. The iluted form of kettle gives a greater surface to agiven capacity, all of which is rendered effective by making thebrick-work of the flue conform to the elevations and dcpressions of thekettle bottom.

I make no claim to the iiuting or corrugating of kettles separatelyconsidered, but

What I do claim as Iny invention, and de sire to secure by LettersPatent, ism

In combination with the tinted outer surA face of the kettle, formingthe masonry constituting the opposite face of the flue with corAresponding iiuting or eorrugations, as as to surround the kettle with anundulating passage for the products of combustion, substantially as andVfor the purposes set forth.

J1 B. BRADEoED, I. I. MICHEL.

